My Acer keyboard is not working?

Around March, I was playing game and decided to stop and do some work. A few hours later, I turned it on and wanted to search something. I click A but nothing happened, I was thinking that I can fix it using a simple restart. After it restarted, I try to type but it's still doesn't work.

I try to find help by searching in the internet but nothing work. The button that work is the turn on\off button. It's been not working for 1 month. Help please.